Tsunamis. Earthquakes. Volcanoes. These are the sorts of natural disasters movies are made from, because throughout history we've learned that natural disasters often become human disasters. But how much are we contributing to the scale of the human toll of natural disasters when they hit? How much do our decisions about where to build, what to build, and how to build impact that cost? We spend the hour with Robert Muir-Wood, author of "The Cure for Catastrophe: How We Can Stop Manufacturing Natural Disaster", talking about what he's learned over his 25 years working to understand the risks associated with natural disasters.